数列{an}是正项等差数列,若bn=a1+a2+a3+……+an/n则数列{bn}也为等差数列,类比上述结论,写出正项等比数列{cn},若dn=________,则数列{dn}也为等比数列
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![数列{an}是正项等差数列,若bn=a1+a2+a3+……+an/n则数列{bn}也为等差数列,类比上述结论,写出正项等比数列{cn},若dn=________,则数列{dn}也为等比数列](/uploads/image/z/3619570-58-0.jpg?t=%E6%95%B0%E5%88%97%EF%BD%9Ban%EF%BD%9D%E6%98%AF%E6%AD%A3%E9%A1%B9%E7%AD%89%E5%B7%AE%E6%95%B0%E5%88%97%2C%E8%8B%A5bn%3Da1%2Ba2%2Ba3%2B%E2%80%A6%E2%80%A6%2Ban%2Fn%E5%88%99%E6%95%B0%E5%88%97%EF%BD%9Bbn%EF%BD%9D%E4%B9%9F%E4%B8%BA%E7%AD%89%E5%B7%AE%E6%95%B0%E5%88%97%2C%E7%B1%BB%E6%AF%94%E4%B8%8A%E8%BF%B0%E7%BB%93%E8%AE%BA%2C%E5%86%99%E5%87%BA%E6%AD%A3%E9%A1%B9%E7%AD%89%E6%AF%94%E6%95%B0%E5%88%97%EF%BD%9Bcn%EF%BD%9D%2C%E8%8B%A5dn%3D________%2C%E5%88%99%E6%95%B0%E5%88%97%EF%BD%9Bdn%EF%BD%9D%E4%B9%9F%E4%B8%BA%E7%AD%89%E6%AF%94%E6%95%B0%E5%88%97)
数列{an}是正项等差数列,若bn=a1+a2+a3+……+an/n则数列{bn}也为等差数列,类比上述结论,写出正项等比数列{cn},若dn=________,则数列{dn}也为等比数列
数列{an}是正项等差数列,若bn=a1+a2+a3+……+an/n
则数列{bn}也为等差数列,类比上述结论,写出正项等比数列{cn},若dn=________,则数列{dn}也为等比数列
数列{an}是正项等差数列,若bn=a1+a2+a3+……+an/n则数列{bn}也为等差数列,类比上述结论,写出正项等比数列{cn},若dn=________,则数列{dn}也为等比数列
(c1*c2*c3*...*cn)根号n